MESON Chess Problem Database

Problem Display
PID: 24948 (8/2B5/b6b/p2p4/QPpkNp1R/1P6/1P2K3/6NB w - - 0 1)

Haring, Jacobus

2nd Prize, San Francisco Chronicle, 1956

8/2B5/b6b/p2p4/QPpkNp1R/1P6/1P2K3/6NB

#2

10 + 7

3976 FIDE Album (1956-1958) 1961

SOLUTION

  • SOUND
  • Sets
    • 1...cxb3+
      • 2.b5#
    • 1...c3+
      • 2.b5#
    • 1...f3+
      • 2.Sxf3#
    • 1...dxe4
      • 2.Qd7#
  • Tries
    • 1.Rxf4?
      • threat
        • 2.Sf3#
        • 2.Sg5#
      • 1...cxb3+
        • 2.b5#
      • 1...c3+
        • 2.b5#
      • 1...axb4
        • 2.Sf3#
      • 1...dxe4
        • 2.Qd7#
      • 1...Bg5
        • 2.Sf3#
        • 2.Sxg5#
      • 1...Bxf4!
  • Keys
    • 1.Kd2!
      • threat
        • 2.Se2#
      • 1...c3+
        • 2.bxc3#
      • 1...f3+
        • 2.Sg5#
      • 1...cxb3
        • 2.b5#
      • 1...dxe4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,XP(E)::QAR(F)+P(G)
    • P(a);CHECK::QAR(F)+P(G)
    • P(c);CHECK::S(A),XP(c)
    • P(e);OGATEB,XS(H)::QAR(F)
  • Tries
    • Try
      • R(I);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,XP(E)::QAR(F)+P(G)
        • P(a);CHECK::QAR(F)+P(G)
        • P(d);XP(G)::S(A)
        • P(e);OGATEB,P_SPINP(e),XS(H)::QAR(F)
      • Refutation
        • B(g);XR(I)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • S(A)
    • Vars
      • P(a);CHECK,OGATE::P(C),XP(a)
      • P(c);CHECK::R(I)+S(H)
      • P(a);XP(E)::QAR(F)+P(G)
      • P(e);OGATEB,XS(H)::QAR(F)
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